asterixdb/asterix-app/data/csv/sample_12.csv

f1,f2,f3
1,true,"text"
2,false,"text"
3,true,"text"
4,true,""
5,false,
6,true,"text""
more lines"
7,false,"""
"
8,true,""
9,false,"text"""
10,false,text\.
11,true,"text\."
,false,\.text
13,true,"\.text"